Data as of Nov 6, 2026
51.19.0.0/17
Anonymizer · ISP proxyCox Communications Inc. · space held by Sky UK Limited
Announcement
this exact prefix
RPKI valid
Announced by
Type
ISP proxy
Recent change
New origin Jul 2026
its first announcement on record
IPv4 market
Path
Announced by AS22773 since Jul 2026 · 3 mo ago
1 · Holder
record created Feb 5, 2026 · reallocated to Internet Utilities Europe and Asia Limited Feb 5, 2026
4 · Use
ISP proxy
anonymizer space, operator not named
Operators, sellers and brokers
Leased from
IP brokers
| Name | In 51.19.0.0/17 | /24s |
|---|---|---|
| IPXO | 32,768100% | 128 |
Leased from
Owners leasing their own space
| Name | In 51.19.0.0/17 | /24s |
|---|---|---|
| Sky UK Limited | 32,768100% | 128 |
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
51.19.0.0/17
From the registry to its use
- Feb 5, 2026Registry recordSky UK LimitedALLOCATED PA51.19.0.0/16
- Feb 5, 2026ReallocatedInternet Utilities Europe and Asia LimitedSUB-ALLOCATED PA51.19.0.0/17
- Apr 1, 2026Route objectIPXORIPE route object for AS22773 Cox Communications Inc., maintainer NETUTILS-MNT
- Apr 1, 2026Route objectIPXORADB route object for AS22773 Cox Communications Inc., maintainer MAINT-AS834
- Jul 30, 2026– today
- Aug 31, 2026Route objectIPXORIPE route object for AS6079 RCN, maintainer NETUTILS-MNT
- Aug 31, 2026Route objectIPXORADB route object for AS6079 RCN, maintainer MAINT-AS834
- todayLeased fromIPXOIP broker
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Leased from | Holder | RPKI |
|---|---|---|---|---|---|
| 51.19.0.0/21 since Oct 10, 2026 | AS6079 | ISP proxy | IP broker IPXO | Sky UK Limited via Internet Utilities Europe and Asia Limited | |
| 51.19.8.0/21 since Oct 10, 2026 | AS6079 | ISP proxy | IP broker IPXO | Sky UK Limited via Internet Utilities Europe and Asia Limited |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 51.19.0.0/16 | 65,536 | UK-SKY-19930901 | Sky UK Limited (ORG-SUL39-RIPE) · GB | ALLOCATED PA | Feb 5, 2026 | hostmaster@ |
| └ 51.19.0.0/17 | 32,768 | SKY-LEASED-IPXO | Internet Utilities Europe and Asia Limited (ORG-IL687-RIPE) · GB | SUB-ALLOCATED PA | Feb 5, 2026 | report@ |
Network & registry
IPv4 market
Holder
- Organization
- Sky UK Limited
- Handle
- ORG-SUL39-RIPE
- Range
- 51.
19. 0. 0/ 16 - Registration type
- ALLOCATED PA
- Record created
- Feb 5, 2026
- Reallocated to
- Internet Utilities Europe and Asia Limited (ORG-IL687-RIPE)
- Reallocated range
- 51.
19. 0. 0/ 17 - Reallocation type
- SUB-ALLOCATED PA
- Reallocated
- Feb 5, 2026
Origin network
AS22773
US
- Name
- Cox Communications Inc.
- Type
- Internet provider
- Registered
- Nov 20, 2001
- Domain
- cox.com
- Website
- www.cox.com/peering
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Jul 2026
- Current origin since
- Jul 2026 · 3 mo
- Origin networks
- 1
RPKI
Route origin authorizations
Whois
Registration for this announcement
- Range
- 51.
19. 0. 0/ 17 - Netname
- SKY-LEASED-IPXO
- Registrant
- Internet Utilities Europe and Asia Limited
- Registrant country
- EU
- Organization
- Internet Utilities Europe and Asia Limited (ORG-IL687-RIPE)
- Org country
- GB
- Type
- SUB-ALLOCATED PA
- Created
- Feb 5, 2026
- Updated
- Aug 31, 2026
- Maintainer
- netutils-mnt
- RIR
- RIPE NCC
- Country
- GB
- Delegated
- Sep 1, 1993
- Status
- assigned
Report abuse
Abuse contact
- report@
abuseradar. com - Name
- Internet Utilities Abuse Contact
- Handle
- AR834